Riveting holder-on



Aug- 165 1932- A. M. ANTlcH RIVETING HOLDER-ON 2 Sheets-Sheet 1 Filed May 25, 1930 .M mm n TA N N .n R www Ma Y ma n A Aug. 16, 1932. A. M. ANTlcH 1,872,215

RIVETING HOLDER-ON Filed May 2s, 195o 2 sheets-sheet 2 l N V E N T mon Martin .Antzz A CERNEY ww ww Patented Aug. 16, 1932 UNITED STATES ANTON MARTIN ANTICH, ASBUR-YZIPARK, NEW JERSEY, ASSIGNOIR-Y FRTY GENT TO THOMAS SKR-OZA, O F HARTFORD, CONNECTICUT- 1min?.N11` OFFICE-i RIVETING Hoene-QN Application filed May 23,

1Q My invention contemplatesthe provision` of simple and effective mechanism forjarranging the rivet-head holding die or anvil under the desired pressure againstl the 'rivet head and for providinga mechanical 'yieldable 'connection between the die-holdingv member and the brace for the device, whereby the necessity for the use of pneumatic mechanism is entirely dispensed with, and shrinkage of the rivet head may befcoinpensatedf 20.for. ,s f if Pneumatic pressure exerted upon the head of the rivet to be effective usually amounts toI about eighty pounds yper'square inch. VWhere such high pressures are used and thetplates to be riveted are thin,as in boilers, the pres-` sure is so great as to slightly buckle the plates inwardly and thereby frequently causes defective riveting. My linvention-ob viates this difficulty by making the pressure 30 exerted by the mechanism upon the rivet head mechanically adjustable to substantially any desired extent. 5

My invention further vcontemplates the provision of an elongated, strong and lflenible member, such asa steel cable, the elfective.4 length of which may be varied, for causing it` to exert any desired pressurey upon the rivet head, yand thereby providing simple, comparatively inexpensive, and effective means which may be readily tensioned or released when desired, and which is not*y likely to `get out of order, for properly holding the, rivet without buckling the plates through which the rivet is passed.

The various objects of my invention will be clear from the description which follows and from the drawings, in which Fig. l is atop plan View of my improved device.

Fig. '2 is a front view of the same'.

i930. serial No. 455,013.y

"Figi Sis a vertical longitudinal' section thereof. l i Y i Fig. 4L' is anlend or side view thereof. j vFig. 5 "is an end view of the yieldably mounted pulley1 supporting block for the cable. s

ig. 6 isv a'fragmentary front view partly in section, of a portion of thek adjusting handle and of the spring therefor, and 1 i. Fig. 7 is a perspective view' lofthe winding pawl., I .i I i .i In that practica-ly embodiment of my--inven` tiongwhi'chl have illustrated'byway of eX.-` ample, `I prefer to provide Ya substantially cylindrical casing as 10, terminating at `its rear, end in an internallyfthreaded hub as l1, fand internally ,threaded asat '13 atits other end. An' opening as 12 may vbe provided in 'the PEB.. i

upper cylindrical surface vof the casing to' u allow the winding infef'shanism soon to be de-- scribed, to be set a'slowj'as 'possibletherein Intothe hub 11, a suitable brace 14 maybe screwed.l Said brace preferably takesk the form of a pipe of sutlicient length to l'abut against a stationary wall or frame such as a post (notshow'n) on a platform upon which the operator may stand. Since the pipe brace 151 lis well known, no lfurther description thereof is deemed necessary. I 'At'its other end, the casing 10 has screwed` thereinto the bushing l5 which'in turn, slidably receives .the die-holder 16, preferably in` thev forni ofV afpartly hollow and slotted cylinder. f -Atione end thereof, the"dieholderfis` closed by the cap retainer 17 screwed thereto, and adapted to .retain'the yieldable cablesupporting and pressure applying andreceivingA mechanism in place.. s

` The outer ydiameter of the cap retainer 17 is preferablysubstantially the same. as `the inner diameter of the casing-l0, so that as the die-holder 16 is reciprocated into and out of the casing 10, said holder is guided by the engagement'of said cap retainer with the inner wall of the casing,said holder or cylind-erbeing further guided in its movement by the bushingl. To urge the die-holding cylijnder toward its outermostor forwardmost position relatively' to the casing, I provide a suitable, comparatively heavy though Weak coil spring as 18 engaging the cap 17 at one end and at its other end, engaging the end wall 19 of the casing. rlhe spring 18, however, is made of such strength that the cylinder 16 may readily be pushed rearwardly back into the casing manually against the action of the spring when itis desired to do The cylinder 16 is provided at-its front end with a -concentrically arranged vopenin 20 to receive the .holding die 21, and isslotte radially at diametrically opposite points by means of the slots 22 and 23, to receive the cable 42 in all positions of the cylinder. At

its rear end, the cylinder is made hollow tov supplement the action of the springs andof substantially the same length as the springs. Mounted on said posts and normally urged forwardly by the springs 27., are the yieldable pulley blocks 30 and 35. Each of saidy blocks is arcuate von one side to fitthe cylindrical wall 26, and-'flat at its other side. The block is provided with openings 31 into which the posts Lare inserted, whereby the blocks are guided, for movement under pressure, coaxiallyof the casing 10.

- The block-s 3Q and13'5 are secured together byfmeanszof thestud shaft 36, and are spaced apart sufficiently to `receive the pulley `37 for revoluble movement Von said shaft.

`The cap retainer 17, when screwed on the inner end ofthe cylinder 16, may be .adjusted to engage, and Vexert pressure upon, the rear ends 38 of the blocks 30 .and 35 and thereby to 4compress thesprings 27 and the bumper 28slightly against the bottom ofthe opening 24 vof the cylinder..

At .the forward end o-f the casing 10, as for example, on suitable upstanding flanges V39 and 49, extending part-wayof .the length of the casing, is mounted .the shaft 40 which carries the loose pulley 41 revolubly mounted thereon, said shaft being suitably secured to the flanges. The pulleys 37 and ,41 ar.e-de signed to guide the cable 42 which ismade preferably of steel, in its movement. The extreme forward end 42 of the cable is permanently secured in asuitable recess as 43 the flange of the bushing 15 as by means of the :compression plate 3.2 held to the bushing flange by the screws 33. 'Ihe other end 44 of the cable is secured to the winding shaft 45. .Said .plate 32 .may be provided with a radial projection 34 inserted into the slot 23 tofprevent rotation of the bushing 15 on the casing, and theJ end of the cable may be enlarged or riveted to firmly secure it in place in the recess 43.

It will be seen that as the cable is tightened,

as for instance, by shortening the cable or ro winding up its end 44, the loop 46 of the cable urges 'the pulley 37, the shaft 36 and the vblocks and 35 secured thereto, forwardly relatively to the cylinder 16, along the posts 25 and againstthe action of the springs 27 and .of the bumper 28,. provided that the rivet head die 2l rests against the head of the rivet.` f

transmitting the pressure on the cable to the casing 10 and thence to the brace 14. Said means takes the Vform of suitable winding mechanism for winding up the cable -end 44. Said mechanism is mounted as a unit on the side frames 47 and 48, which are in turn secured to the flanges 39 and 49 upstanding from the casing.

I prefer first to assemble the winding mechanism on the 'side frames 47 and 48, and then to secure said side frames in place to the flanges. Toward this end, the inner and outer edges of the side frames are tongued vas at 50 and enter suitable grooves as 51 lin the flanges. A pin as 52 passing through the .flanges vand through. the side proper position.

The shaft 45 of said lmechanism is mounted in the side frames 47 and 48, and carries the windsup pulley 53 near the middle thereof. I On one side of said pulley 53 is a ratchet wheel 54,V a similar ratchet wheel 55 being arranged on the other side thereof. .Straddling the ratchet wheels and loosely mounted on the shaft 45 vis the hand-le 56, provided with oneor more suitably shaped cams as 72 on opposite sides of the adjacent ratchet wheels. As the handle V56 is oscillated, the ratchet wheels 54 and 55 are operated'in a clockwise direction as viewed in Fig. 3, to wind up the cable end 44 onthe pulley 53.

For this purpose, I provide a pawl as 57 pivoted tol the handle as at 58 and having a properly shaped toothed end 59 engaging the teeth of the ratchet wheels 54 and 55. A spring as 60 secured to the handle as at 61 and 62 engages the pawl 57, and normally maintains the tooth 59 thereof in its operative position in engagement with the ratchet wheels but yields to allow free movement i frames secures the winding mechanism in of the handle in the direction of the-'arrow of Fig. 3 without rotating said wheels,k A pair of spaced retainingpawls 66, spaced apart as by means of the pulley 63, andmounted on the shaft 64 supportedin the side frames 47 and 48, are spring-pressed into engagement with the ratchet wheelsas by means of coil springs 65. 4Said'pavvls serve to prevent loosening of the cable 42 by retaining the ratchet wheels and the shaft 45 stationary. during movement of the handle 56 in the direction of the arrow ofyFigfS. A coil spring as 67 having one end vsecured tov the side frame as `at 68 and having its other end secured tothe shaft 45, tends to` urge said shaft in a clock-wise direction asviewed in Fig. 6 and thereby tends to mailitain the cable 42 in its tightened position, and tends to maintain the handle in substantially upright position, ready for operation.. j

It will be understood that it is sometimes desirable to allow the cable 42to be quickly loosened as for example, vwhen. the holderon is first set into position. vFor this. purpose, the pawl 57 is provided with Va pair 'of projectionsr69 extending fromVv each side thereof and designed to engage the lug upstanding from each of theside frames 47 and 48, said projections being sufficiently long for that purpose. To Vrelease the cable 42 from the operating pawl 57, the handle 56 is rotated in the direction of the .arrow of Fig.V 3 until theprojection 69 strikes the lug 70 and thereby rotates the pawl 57 *j in a counter-clock-wise direction about its pivot 58 and removes. the pawl toothv 59`fro1n vthe ratchet wheels, on the further slight movement of the handle in the same direction.

f Means are also provided for releasing'the l ratchet wheels at the same time from the `re-i l taining pawls 66. vSaid means comprisesthe` cams 72 secured to and extending from the sides of the handle 56 and mounted on theL shaft 45. The cams are so shapedthat in .l the most forwardly position of the handle,

said cams engage the pawls 66 `above .the pivot therefor, and preferably infadvance of the engagement of the stationary lugs`70 by the projections 69, whereby the retaining pawls are preferablyfirst lifted 'fromtheratchet wheel, and then the pawl 57 is lifted from said wheels and the shaft 45 thereby freed. The cable 42 may now be pulled forwardly and unwound from the pulley 53,-

. thereby releasing the pressure onthe blocks 30 and 35, and allowing the cylinder 16 to be withdrawn from the rivethead andpushed 'Y manually into the casing 10 against the action of the spring 16, and the entire devicel shifted to the next rivet. Y n

In the operation of my improved holderon, a suitable die is inserted in the 4opening 2O of the cylinder 16, andthe holder-on mounted in place in the usual manner, vthe cylinder being partly retracted manuallyV into fthelcasing' 1Q fory that purpose; After the holder-onl has-been set in 'place approximately,"the.. cylinder is released so thatvfthe spring 181urgesthe die and the' cylinder 16 against ythe rivet head. The .pressure on the rivet head may now be adjustedby'reciprocatingthe handle 56, thereby rotatingthe shaft 45 in aclock-Wise direction and Wind.. ing up the cable 42 so that the`r blocks 3() and 35`through the springs 27 exert the requi-red pressure on the cylinder tohold the die liirmly against the rivet.` :As'the riveting operation' on the/.unheaded end ofthe rivet proceeds.l in thefusuallfmanner, .the blows transmitted through the rivet to the die and to the cylinder 16 are partly takenup by the springs-27 and the rubberbumper 28, which are yrestrained at one end bythe blocks 30 and '35,' saidl blocksbeing in turn retained by the cable'42.l f

The restraint takes the v form ofl outward' pressure upon the pulley 37 put thereony when' the: cable 42m-tightened.' ;The.restraint orl reactionA produced by the holding effect ofthe cableupon the pulley. blocks` is partly taken-upthe guide pulley :41 and thence transmitted to thecasingl() 4and partly 'by the shaft 45 andalsotran'smitted to the casing 10."V 'It' will be .seen that by tightening the cable 42 asfthe handle V56 is reciprocated, any required pressure maybe exerted upon theV pulley blocks tohold the 1 cylinder k'16, against the.rvet head as'firmly as may be required Since Vthe riveting .operation causes-the heated rivet head yto shrink, suchA shrinkage may be compensated for by merely reciprocatingthe handle 56, as the operation proceeds, as manytimes asthe judgment; of the operator dictates. I ji I It will also beseenthat the pressure may vbeinstantaneously 'released 'by merely. swingingthe handle 56 inA lthe, direction of the ar; row of` Fig. 3 .untill said handleisfstopped; bythe engagement of the -pawl projections 69.and thecams 72 with thelugs'70and the i byV merely pulling .on the cable. 'The cylin` der 16 may thenbe'removed from'the rivet head vby pushing it back finto the .casing against the'springV 18. V f

It will further be seen that the springs 67 `tend to take up any normal slack in'thecable so that .thehandle is at-all times ready for' operation, when the holder-Onis inoperative position. i v

It will further be seen ed asimple and eective device, eliminating vrthe disadvantages of pneumatic holderson, capable of adjustingthefpressure against that l-have provid-i the'rivet, and well-adapted to meet' the se'Y vere requirements of practical use.

While I have shown and described a `cer; tainspecilic embodiment of my invention, it will be understood that I do not intend to limit myself thereto but intend toclaim my invention as broadlyas may be permitted by the state of the priorart `and the terms of the appended claims.

I claim:

l. In mechanism of the character described, laeylinder adapted to receive a rivethead holding die, a casing in which the cylinder is kaxially ,movable inwardly and outwardly, a spring in the casing for urging the cylinder toward its outermost position,

a pulley ,carried at the inner end of the cylinder., a block within the cylinder on which said pulley 4is mounted, yieldable means interposed between the block and the end wall of the cylinder for urging said block into its innermost position, a cable arranged about the inner part of said pulley, one end of said cable being fixed relatively to the casing and past said pulley, a second pulley on the casing about which said cable is passed, a pulley shaft arranged intermediate of the ends of the casing, a .tibi-rdV pulley on said shaft to whichthe other end of the cable is fixed, a pair of ratchet wheels on said shaft, one of which is disposed oneach side of said third pulley, a pair of .spring-pressed pawls pivoted to the casing for normally preventing unwinding movement of said pulley, a handle pivotally mounted on `the shaft, a spring-pressed operating pawl on the handle for operatingV said ratchet wheels, and means yfor disengaging said pawls from the ratchet wheels when the handle is moved toward its outermost position.

`2. .In mechanism of the character described, a casing., a rivet holding member slidable longitudinally in the casing during operation of Vthel mechanism, :a block .slidable within said member, yieldable meansinterposed between the vblock and the member, and means for adjusting the position of the block relatively to the member .and for maintaining said .block in its adjusted position including a pulley `carried by the blockand means for bodily moving the pulley.

3. In a device ofthe character. described, a casing, a rivet holding member movable within the casing, a flexible member operatively connected to the holding member for adjusting the position of the rivet holding member, for applying pressure thereto,.and for receiving the pressure' put upon the rivet holding member, an oscillatory handle on said cas- A ing,.me'ans operatively connectingthe handle to the other end of the flexible member for tensioning the ilexible member including a pair of ratchet wheels, a pair of retaining pawls spring-pressed into -engagement with. the` ratchet wheels, and an operatingpawl ratchet wheels, means vfor 'removing the retaining pawls from the ratchet wheels and means for removing the operating pawl from the ratchet wheels when the handle is moved into its limiting position. Y- A 4. In mechani'sm` of Vthe/character described, a casing, a rivet 'holding 'member' movable in said casing, an elongated liexible member for exerting pressure upon lthe rivet holding members, means for transmitting the pressure upon the flexible member" tothe 'casing, and yyieldable means interposed between the flexible member 'and the' rivet-holding member," comprising..I a block mov-able axially of and relatively'to the rivet holding member on the shortening 'and lengthening of the effective. length of 4the ,flexible .member and normally'mova'ble as a` unit with said member, posts projecting from'the rivet holding member and entering said block for guiding the block, yieldab-le means adjacent the posts and interposed between the block and the rivet holding member, and a pulley for the flexible member carried by the block.

5. In a riveting holder-on, a casing open at one end thereof, a coil spring in the casing near the other end thereof, a cylinder in the casing projecting through the open end and engaging the end ofsaid spring, a bush-v ing removably secured in the open end of the casing and engaging said cylinder for guiding the same, a pair of substantially parallel spaced side frames upstanding from the casing, an oscillatory handle mounted between said frames and means operatively connected to said handle and to the cylinder for exerting pressure upon the cylinder and for transmitting pressure put upon said cylinder to said casing including a cable fined at one end to the casing and operatively connected at the other end to said handle, and means for yieldingly and operatively connecting an intermediate portion of the cable to said cylinder.

6. In a riveting holder-on, a casing having a projection thereon, a cylinder within said casing, a cable fixed at one end to said casing and yieldingly and operatively connected to the cylinder, and means on said casing for winding up the other end of said cable, comprising a pulley to which the other end of the' cable is secured, a pair of ratchet wheels arranged coaxially of said pulley.` a pair of retaining pawls spring-pressed into engage'- ment with the ratchet wheels for normally preventing rotation of said wheels, an oscillatory handle, an operating pawl carried by said'handle and spring-pressed into engagementv with the ratchet wheels, an extension on said operating pawl adapted to engage said projection on the movement of the handle towards the cylinder to remove said operating pawl from the ratchet wheels, and a cam operatively connected to thehandle for removing the retaining pawls from the ratchet wheels at the same time that the operating pawl is so removed.

7 In a riveting holder-on, a casing open at one end thereof, a cylinder in the casing projecting through the open end and adapted to receive the blows of a riveting operation, an oscillatory handle on the casing, and means operatively connected to said handle and to 10 the cylinder for exerting pressure upon the cylinder during the riveting operation and for transmitting the blows received by the cylinder to said casing including a cable operatively connected to the cylinder at one part of its length and operatively connected at another part or" its length to said handle, a pulley for said cable adjacent the cylinder, and means for supporting the pulley movable by said cable relatively to the cylinder when movement of the cylinder is halted, and movable with the cylinder as a unit when movement of the cylinder has not been halted, and a yieldable member interposed between the pulley supporting means and the cylinder. 8. In rivet-holding mechanism, adjustable by the operator during the operation thereof, a casing, a cylinder axially movable in said casing, and means for preventing rivet-releasing movement of said cylinder under rapid intermittent axial blows transmitted to the cylinder after it has been positioned against the head of the rivet, comprising a. flexible cable adjustably connected to the casing, an oscillatory handle for tightening said cable while the mechanism is holding the rivet to resist the Vaxial blows on the cylinder, and yieldable means interposed between the cable and the cylinder and carried by and within said cylinder for urging said cylinder toward its outermost position relatively to the casing. 9.. In mechanism of the character described adapted to receive and react torapid axial blows thereon delivered by a rivet upon which riveting blows are exerted and adapted to be operated by a single operator, a rivet-die holding cylinder having slots therein, a pulley supported wholly within said cylinder and of less diameter than that of the cylinder, yieldable means for transmitting pressure put upon the pulley to the cylinder while the cylinder is receiving blows, a cable operatively connected to the pulley'for exerting pressure upon the yieldable means and arranged for part of its length longitudinally of and in the interior of the cylinder to maintain the cylinder in rivet-holding position, and means including a cont-rol handle adapted to be manipulated by the operator for adjusting the pressure exerted by the cable upon the. yieldable means while the mechanism is in operation.

ANTON MARTIN ANTICH. 

